Hi, I pulled out my Duo 230. Here is a photo of the back panel.
From left to right, if you have a modem it is under the left swiveling foot, next is the reset button, followed by the Dock connector, the power jack and under the right swivel foot the printer/modem connector which is switchable in your control panels. This connector btw is not a Geoport connector as the 230 has no DSP that the AV macs had.
Although you have an oddity there, I didn't realize until just now that instead of a phone jack in the modem port you have a mini din which means you have an international modem port according to the Apple service manual which makes sense because you are in the UK.
To get it on the internet is going to be fun without a dock since a Dock II has built in 10T ethernet (note that it will be stamped Duo Dock II). The Dock I required a nubus card. Only downside with a Dock is that it's max resolution is thousands of colours at 832x624. I have some more photos here,
http://www.kevinomura.com/powerbooks/duodock/index.html
Farallon made a product called Etherwave and a special version for PowerBooks that drew it's power from the ADB port and plugged into the moden/printer port. This allowed you to hook up your PowerBook to ethernet. They are quite rare though and none on eBay at the moment.
If you had a SCSI mini dock then you could find the Asante EN/SC ethernet to scsi adaptor which again is quite rare. I found one on eBay here, [link|http://cgi.ebay.com/USED-SURPLUS-ASANTE-MINI-EN-SC-ETHERNET-ADAPTER
W0QQitemZ370170139246QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item370170139246 &_trksid=p3286.c0.m14&trkparms=72%3A1205%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318%7C301%3A1%7C293%3A1% 7C294%3A50]
But it does not have it's ADB power cable so it is kind of useless since it doesn't have a source of power.
There is another one here,
[link|http://cgi.ebay.com/Asante-Micro-EN-SC-Portable-SCSI-Ethernet-Adapter
W0QQitemZ320342768178QQcmdZViewItemQQptZCOMP_EN_Networking_Components?hash=item3 20342768178&_trksid=p3286.c0.m14&trkparms=72%3A1205%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318%7C301%3A1%7C293%3A1% 7C294%3A50]
but it is rather insanely priced. It does have it's power adaptor though..... at this price point a Dock would make more sense personally.
Kevin
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